Electric-arc lamp.



Patented Nov. s, |900.

J. A. HEANY. ELECTRIC ARC LAMP.

(Applicntion kd Fab, 27, 1900.)

z sheets-snm l.

(llo Model.)

r r l l r r f r f r r u l n 4 'f a l l f f a a f l r r l a r l a f f f rg i e l I l I I I n l I a l l l I l l l l l l l l d l l I l l n l miwams Pernis co, PrmmAJ'mcx.4 wnsumnfou. u. c4

Patented NW6, |906.

J. A. HEANY. ELECTRIC ARC LAMP.

(Application led Feb. 27, 1900.)

2 Sheets-Sheet 2.

(Nn Model.)

UNITED STATES VPATENT OEEICE.

TETER-HEANY DEVELOPING COMPANY, OE SAME PLACE AND CHARLES- TON, WESTVIRGINIA.

ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 661,126, dated November6, 1900.

Application filed February 27, 1900. Serial No. 6,659. tNo model.)

To @ZZ whom it may concern:

Beit known that I, JOHN A. HEANY, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and usefulImprovementsin Electric- Arc Lamps, of which the following` is aspecication.

y presentinvention has relation to an elecxo tric-arc lamp and to thatparticular type of lamp which is illustrated, described, and claimed ina companion application for a patent Iiled of even date herewith underSerial No. 6,658, series of 1900. In said companion I5 application thereare shown, described, and claimed certain generic features of invention,one of which may be briefly described as follows: the location of thecarbons, the solenoid-core, and auxiliary working parts in an zoair-tight receptacle around which is arranged the solenoid-coil. In thepresent invention this same generic feature is involved; but a differentarrangement of the parts, together with other specific details ofimprovement, z5 forms the subject-matter of this application.

My present invention consists, first, in an improved means of conductingthe electric current to the 'upper carbon; second, in an improved meansfor feeding said carbon;

3o third, in an improved construction of the inner air-tight receptaclecontaining the carbons and the working parts, and, fourth, in animproved holder for the lower carbon.

My invention, stated in general terms, consists of an electric-arc lampconstructed and arranged in substantially the manner hereinafterdescribed and claimed.

The nature and scope of my invention will be more fully understood fromthe following 4o description, taken in connection with the accompanyingdrawings, forming part hereof, in Whichv Figure 1 is a vertical centralsectional view of an electric-arc lamp embodying main features of myinvention. Eig. 2 is a cross-sectional view taken on the line x a; ofEig. l. Eig. 3 is a vertical central sectional view of the lower portionof the upper carbon and auxiliaries, said View being taken at right 5oangles to the view illustrated in Eig. l. Fig.

4 is a detail perspective view of the feedingclutch for the uppercarbon. Fig. 5 is a similar view of the lower-carbon support; and Fig. 6is a cross-sectional View similar to Eig. 2, bntillustrating a modifiedform of air-tight inner receptacle.

Referring to the drawings, Ct represents the upper and I) the lowercarbon of the lamp. The carbon t is held at its upper end in a cap d',to which is secured a brush (t2 of highlyconductive material. The capa', brush ai, and carbon ct are adapted to slide up and down in astationary metallic tube a3, which is connected by wire o4,binding-screw 0.5, switch ct, and binding-post t7 with a pole l of thesource of electric energy. 'lhe brush c2 serves' toalways makeelectrical contact between the tube t3 and carbon ct, while permittingsaid carbon to be slid up and down in the tube as. Surrounding the tubec3 and near its base is a solenoid-core CZ. This core d carries theclutch or feeding mechanism for the upper carbon and is adapted to slideup and down upon the tube d in a box or receptacle in the upper end vofwhich the tube c3 is secured. This box f has a flanged basef, whichissnpported upon and iixed to a screwcollar-f2. To the collar filsclamped a globe f3 by means of a screw-ringf'l, said globe inclosing thelower carbon I) and its holder and forming, with the box or receptaclef, an airtight compartment inclosing both carbons, the solenoid-core d,and the necessary auxiliaries for the proper support and feeding of thecarbons.

The receptacle f, as illustrated in Eig. l, has its tubular wallsvertically perforated with uesfr, communicating at the base with aseries oi' radially-disposed iiuesj, and at the upper end withradially-disposed outlets f7, opening into the eXteriorof the boxj". Inthe modiiied form illustrated in Fig. (i the arrangement is the same,except that the outer periphery of the walls of the box isverticallychanneled, as atflo. Surrounding the boxf is an outer casingg, having at its base and top the openings g' and g2, registering,respectively, with the inlets]LIG to iiues]5 and the ontletsffrom saidfines. In the space between the casing g and boxf and around IOO sGeiles the boxis coiled the solenoid-coil 7L, connected by wire 7L andbinding-post 7b2 to the other pole 3 of the source of electric energy.This coil 7L is formed of a wire of sufficient resistance as not torequire an additional resistance to be placed in the circuit. The coil7i. is also connected by wire h3 to a rod m, formiupr a port-ion of thesupport for the lover carbon I). rFhe support for said carbon l)comprises the rod m, tothe lower end of which is secured a plate in', ofspring metal, bent into two angular wings. 'lhcse wings are eachcentrally apertured, as at 'ni/2, the diameter of the aperture beinelarger than the diameter of the carbon l). When the wings are in theirnormal position, as indicated in Figs. land the perforatious 'm2 do notregister and the carbon will be bound securely in the perforations tothe wings. When, however, the wings are caused to approach a parallelposition, the perforations register to a sufficient extent. to permitthe carbon b to slide through the wings.

The feed mechanism for the upper carbon d comprises the solenoid-core d,from whose base projects a stem df, carryingr a springplate cl2, ha vinga central aperture (Z3, slightly larger iu diameter than the carbon d.'lhe normal position of this plate (Z2 is oblique to the lower face ofthe core CZ, as illustrated in dotted lines in Fig. l. rlhe free endofthe plate (Z2 is slotted, atdit, and engages a stop pin or screw d5,fixed to the collar f2, and forces the plate d2 to assu me a positionparallel to the lower face of the core d. When, now, the core d rises,the plate will be tilted immediately and will grip the carbon d andelevate the same. \Vhen the core d falls, the free end of the plate d2will impinge upon stop-pin d, and the plate cl2 will be forced into aposition substantially parallel with the lower face of core d and thecarbon Ct will be released. The uljiward movement of the core d in theboxf under the influence of the coil t is checked or reeulztted,preferably, in the following manner: From the base of the core d projectthe two screw-pins p, the stems of which traverse loosely the collar f2,as indicated in Fig'. Between the heads ot' the pinsp and the collar f2and around the stem of said pins are coiled the springsp'. Vhen, now,the core d is elevated, the springs p will brake or check its movement.

The downward movement of the solenoidcore may be limited or adjusted bythe stop pin or screw d5, which is adaptedto be advanced or retracted inthe eollarf2 for this purpose in addition to its other purpose ofcausing` the spring-plate d2 to assume a position parallel to the baseof the coil.

Having thus described the nature and object of my invention, wliatIclaim as new', and desire to secure by Letters Patent, is-

l. In an electric-arc lamp, an upper carbon, a cap to which the carbonis secured, a contact-brush carried by said cap, a stationary metallictube connected with one pole of the source of electric energy, saidcarbon and its cap adapted to slide freely in said tube and said brushadapted to malte contact with said tube, and a solenoid-corosurrounding` said tube and adapted to slide up and down thereon, saidcore adapted to o| erate the upper carbon in the tube, substantially asand for the purposes described. V

2. ln an electric-arc lamp, a feeding` meehanism for one ot' thecarbons, con'iprisine a solenoid-core, a stem projecting;` from the baseof said core, a spring-plate fixed at one end to said stem and having acentral aperture surroundiine` the carbon and adapted to normallyproject obliquely to the base of the core, and a stop-pin adapted whenthe core is depressed to depress the free end of said spring-plate sothat said plateshall assumea position parallel to the base of the core,substantially as and for the purposes described.

3. ln an electric-arc lamp, a boxV or receptacle adapted to inclose theupper carbon and the solenoid-core, said box having` its peripheralwalls channeled or grooved to form airflues, substantially as and forthe purposes described.

it. ln au electric-arc lamp, an upper carbon, a fixed tube, wherein theupper carbon is adapted to move, a solenoitl-core surroundiner said tubeand adapted to slide up and down thereon, a stem projecting` from thebase of said core, a spring-plate fixed at one end to said stem andhavingr a central aperture surrounding the carbon, said plate normallyprojecting from the stem obliquely to the base of the cor a set-screwadapted to form a means for adjusting the downward movement ot' thecore, said screw adapted when the core is dein'essed to depress the freeend of the spring-plate to cause the plate to assume a position parallelto the base of: the core, substantially as and for the purposesdescribed.

ln an electric-arc lamp, a box or receptacle, a solenoid-core adapted tobe elevated and depressed in said receptacle, a collar forming a basefor the box or receptacle and a support for the core in the depressedposition, a headed pin or pins dependintjr from the base of the core andtrayersing` said collar and a spring` coiled around said pin audinterposed between its head and the collar, Substantially as and for thepurposes described.

ln testimony whereof l have hereunto set my signature in the presence oftwo subscribing witnesses.

JGHN A. HEANY.

WVitnesses:

J. WALTER DoUGLAss, THOMAS M. SMITH.

